Multi-purpose Drainage Management (MDM) Plans

Transcription

1 Multi-purpose Drainage Management (MDM) Plans August 13, 2015 Chuck Brandel, PE Civil Engineer, ISG Joe Mutschler, PE Faribault County SWCD

2 AGENDA 1. Multi-purpose Drainage Management (MDM) Plans 2. Examples of Plans 3. Examples of Projects

3 1. MULTI-PURPOSE DRAINAGE MANAGEMENT PLANS

4 WHAT IS MULTI-PURPOSE DRAINAGE MANAGEMENT? Engineered drainage systems that provide both private drainage benefits and public water management benefits - Al Kean, BWSR

5 WHAT IS MULTI-PURPOSE DRAINAGE MANAGEMENT? Faribault County SWCD Received 2013 Conservation Drainage Management Grant - Utilizing Clean Water Funds Faribault SWCD and Faribault County Drainage Authority developed and managed Martin County 2013 Conservation Drainage Management Grant BWSR ISG Developed and Managed with Martin County Drainage Authority Soil Erosion and Drainage Law Compliance (SEDLCP) 2015 Blue Earth County Drainage Authority and ISG Developed and Managed Blue Earth County SWCD is reviewing

6 WHY SHOULD WE DO MULTI-PURPOSE DRAINAGE MANAGEMENT? Estimated over 20,000 miles of Open Ditch and Potentially more than that in Public Tile Systems are in Need of Repairs and Upgrades THESE ARE ALL OPPORTUNITIES!

7 WHAT IS MULTI-PURPOSE DRAINAGE MANAGEMENT? Preventative Measures Conservative practices that can be applied towards the existing agricultural land without dramatically changing the layout of the landscape. Control Measures Either conveys water, controls flow direction and rate, or maintains a desired water elevation. Treatment Measures Treatment of runoff and drainage water by providing filtering through use of vegetative cover or water storage.

8 WHAT IS MULTI-PURPOSE DRAINAGE MANAGEMENT? On Field (Preventative and Control Measures) Practices that can be applied to all farmland in a watershed. Nutrient and Tillage Management Crop Rotations On Farm (Preventative and Control Measures) Practices that a individual landowner may implement. Surface Water Subsurface Water On Drainage System (Treatment and Control Measures) Practices that will include a group of landowners or public drainage system. Peak Flow Reduction Water Treatment

10 PREVENTATIVE MEASURES Tillage Management Nutrient Management Crop Rotation Cover Crops

12 CONTROL MEASURES Water Control Structure Two-Stage Ditch Tile/Inlet Control or Downsizing Alternative Side Inlets Grassed Waterways Riparian Channel Vegetation Controlled Subsurface Drainage Toe Wood Sod Mats

21 TREATMENT MEASURES Filter Strips Wetland Restorations Sediment Basins Woodchip Bioreactors Saturated Buffers

23 TREATMENT MEASURES Filter Strips Wetland Restorations Sediment Basins Woodchip Bioreactors Saturated Buffers Two Stage Ditch 15 48

26 2. EXAMPLES OF PLANS

27 BLUE EARTH COUNTY TARGETED WATERSHED JD 116 CD 5 CD 56 CD 86

28 BLUE EARTH COUNTY TARGETED WATERSHED JD 116 In-Channel Storage Woodchip Bioreactor Saturated Buffer Cover Crops Nutrient Management

29 BLUE EARTH COUNTY TARGETED WATERSHED CD 5 Wetland Restorations Controlled Drainage Naturally Forming Two- Stage Ditch Wider Buffers Cover Crops Nutrient Management

30 BLUE EARTH COUNTY TARGETED WATERSHED

31 BLUE EARTH COUNTY TARGETED WATERSHED

32 BLUE EARTH COUNTY DITCH NO. 57

33 BLUE EARTH COUNTY DITCH NO. 57 Two Stage Ditch 48 15

34 MARTIN COUNTY MDM PLAN SELECTED WATERSHEDS

35 MARTIN COUNTY JD 51 Potential BMPs: Sediment Basin Controlled Drainage Wetland Restoration (Duck Farm) Two-Stage Ditch Woodchip Bioreactor Saturated Buffer Existing BMPs: Caramelized Bioreactor 9-acre CRP

36 MARTIN COUNTY JCD 350 Potential BMPs: Tile/Inlet Control or Downsizing 50 foot Filter Strips Two-Stage Ditch Riparian Channel Toe Wood Sod Mats Controlled Drainage Wetland Restoration Saturated Buffer *BMPs influenced by DNR protected water

37 MARTIN COUNTY JD 2 M AND W Potential BMPs: Controlled Drainage Two-Stage Ditch Sediment Basin Woodchip Bioreactor Water Control Structure Existing BMPs: Existing Grassed Waterway

38 MARTIN COUNTY CD 29 AND JD 367 Potential BMPs: Wetland Restoration Sediment Basin Controlled Drainage Woodchip Bioreactor

39 FARIBAULT COUNTY MULTIPURPOSE DRAINAGE MANAGEMENT PLAN Faribault County 115 Drainage Systems: 315,000 acres 65% of counties land mass Size Range--200 to 20,000 acres Most are 100+ years old

40 FARIBAULT COUNTY MULTIPURPOSE DRAINAGE MANAGEMENT PLAN HOW DID WE CHOOSE THE FIRST SYSTEMS? Engaged active landowners, residents CD 43 and CD 87 Redetermination of Benefits JCD 23 and CD 24 Possible improvements

41 FARIBAULT COUNTY DITCH 43 Recommended Practices: Nutrient Management Tillage Management Crop Rotations Grass Waterways Filter Strips Controlled Drainage Alternative Tile Inlets Wood Chip Bioreactor Water Storage

42 FARIBAULT COUNTY DITCH 87 Recommended Practices: Nutrient Management Tillage Management Crop Rotations Filter Strips Alternative Tile Inlets Wood Chip Bioreactor Side inlet Control In Channel Storage Urban Practices

43 FARIBAULT COUNTY DITCH 24 Recommended Practices: Nutrient Management Tillage Management Crop Rotations Grass Waterway Filter Strips Alternative Tile Inlets Wood Chip Bioreactor

44 JOINT COUNTY DITCH 23 (FARIBAULT AND MARTIN) Recommended Practices: Nutrient Management Tillage Management Crop Rotation Filter Strips Alternative Tile Inlets Controlled Drainage

45 FARIBAULT COUNTY MULTIPURPOSE DRAINAGE MANAGEMENT PLAN CHALLENGES 1. Willing Landowners Finding the balance between crop production and environmental concerns 2. Securing Funding Grant Applications BWSR, CWF, MPCA

46 3. EXAMPLES OF PROJECTS

47 FARIBAULT COUNTY DITCH 62

50 NEAL MENSING SATURATED BUFFER

51 NEAL MENSING SATURATED BUFFER

52 CR FARMS WETLAND BANK LE SUEUR/BLUE EARTH JD 2

55 WATONWAN COUNTY JD 13

58 SUMMARY CHANGES TO 103E.015 Implementation of MDM plans into all drainage projects Allows for More Landowner Involvement When incorporated into a Repair or Improvement can provided options that can be utilized immediately or when landowners have issues Allows to Look for Conservation Funding at the Start of Projects Utilize Plans when problems occur on a System

59 QUESTIONS?